Integrated water-cooled frequency converter and cooling system thereof

Abstract

The utility model provides an integrated water-cooled frequency converter and a cooling system thereof, and belongs to the technical field of power electronic devices. The technical problems of poor heat dissipation effect, easy damage and the like in the prior art are solved. The integrated water-cooling frequency converter comprises a cabinet body, and is characterized in that a capacitor module located at the upper part is arranged in the cabinet body, a control board card and a power module are arranged below the capacitor module, the cabinet body is provided with an air-cooling heat dissipation assembly used for dissipating heat of the capacitor module, and the power module is connected with a water-cooling heat dissipation assembly. The utility model has the advantages of good heat dissipation effect, low comprehensive cost, capability of avoiding potential safety hazards caused by water leakage, easiness in expansion and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of power electronic devices, and relates to a frequency converter, in particular to an integrated water-cooled frequency converter and a cooling system thereof. BACKGROUND

[0002] Variable frequency speed regulation has been recognized as one of the most ideal and most promising speed regulation modes. The main purpose of using a frequency converter to form a variable frequency speed regulation drive system is to improve labor productivity, improve product quality, and improve the degree of automation of equipment, etc. and to save energy and reduce production costs.

[0003] With the rapid development of various industries, frequency converters have been increasingly widely used. And the application demand of high-power frequency converters is also becoming more and more vigorous, and the application demand of several hundred KW or even several MW frequency converters is also increasing. The heat generated by high-power frequency converters cannot be underestimated, and the application scenarios often have high requirements for space and noise. Therefore, the traditional air-cooled heat dissipation has been difficult to meet the use requirements, and the water-cooled frequency converter has emerged as the times require. However, the water-cooled frequency converter often has high cost and difficult pipeline sealing.

[0004] A kind of adjustable water-cooled frequency converter is disclosed in Chinese patent document [application number: 202321940212.9], including the utility model relates to the technical field of frequency converter, and water-cooled frequency converter is disclosed, including mounting plate, pipe clamp device, water outlet pipe, water inlet pipe, clamping device, positioning block, side plate, heat sink, top plate, rotary motor, support rod and fan, the mounting plate is used to fixedly install overall device, the pipe clamp device is slidably installed on the upper surface of mounting plate, the support rod is fixedly installed at the output end of rotary motor, the fan is fixedly installed at the other end of support rod.

[0005] The above scheme has good heat dissipation effect, but has higher cost and other technical problems. SUMMARY

[0006] The utility model aims at above -mentioned problem, provide a kind of integrated water-cooled frequency converter of cost reduction

[0007] Another object of the utility model is to provide a cooling system of integrated water-cooled frequency converter.

[0008] To achieve the above object, the utility model adopts the following technical scheme: the integrated water-cooled frequency converter, including cabinet, characterized by, the capacitor module in the cabinet is located in upper, control board card and power module are equipped below capacitor module, the air-cooled heat dissipation assembly for heat dissipation of capacitor module is connected on the cabinet, the power module is connected with water-cooled heat dissipation assembly.

[0009] The capacitor module and the power module are integrated, wherein the capacitor module adopts air cooling and the power module adopts water cooling.

[0010] In the integrated water-cooled frequency converter, the air-cooled heat dissipation assembly comprises at least one fan, the front panel of the cabinet body is provided with an air inlet, the fan is arranged on the air inlet, and the back panel of the cabinet body is provided with a plurality of first ventilation holes.

[0011] In the integrated water-cooled frequency converter, the control board card is arranged on one side of the power module, a lower bottom plate connected with the cabinet body is arranged below the control board card and the power module, and a plurality of bottom ventilation holes are arranged on the lower bottom plate.

[0012] In the integrated water-cooled frequency converter, the back panel of the cabinet body is further provided with a plurality of second ventilation holes below the plurality of first ventilation holes for heat dissipation of the control board card, and a plurality of third ventilation holes for heat dissipation of the control board card are arranged on the lower side of the left panel of the cabinet body.

[0013] In the integrated water-cooled frequency converter, the power module of the cabinet body is arranged on one side of the cabinet body close to the right panel, a maintenance door plate is arranged on the right panel, and the maintenance door plate is detachably connected with the right panel.

[0014] In the integrated water-cooled frequency converter, the water-cooled heat dissipation assembly comprises a water-cooled plate, the water-cooled plate is provided with a water inlet connector and a water outlet connector, the water inlet connector and the water outlet connector are connected with a water circulation channel in the water-cooled plate, the power module is fixed on one side of the water-cooled plate, the water-cooled plate is fixed in the cabinet body, and the water inlet connector and the water outlet connector extend out of the front panel of the cabinet body.

[0015] In the integrated water-cooled frequency converter, at least one discharge resistor is fixed on the other side of the water-cooled plate.

[0016] In the integrated water-cooled frequency converter, heat-conducting materials are arranged between the power module and the water-cooled plate and between the discharge resistor and the water-cooled plate.

[0017] In the integrated water-cooled frequency converter, a suspended frame is arranged at the bottom of the cabinet body, and four rollers are arranged at the bottom of the suspended frame.

[0018] The cooling system of the integrated water-cooled frequency converter comprises an external heat exchanger, a plurality of integrated water-cooled frequency converters are connected in parallel to the water outlet pipe and the water inlet pipe of the external heat exchanger, and the water outlet joint and the water inlet joint of the water-cooled heat dissipation assembly are connected to the water outlet pipe and the water inlet pipe.

[0019] The cooling water enters the water-cooled plate through the water inlet pipe, flows in the flow channels of the water-cooled plates to take away heat, and then flows out of the water outlet pipe to the external heat exchanger.

[0020] Compared with the prior art, the integrated water-cooled frequency converter and the cooling system thereof have the following advantages: 1. different heat dissipation modes are adopted for different heat-generating components, the heat dissipation effect is good, and the comprehensive cost is low; 2. the external heat exchanger and the external water outlet joint and water inlet joint are arranged, so that the safety hazard caused by water leakage is avoided; and 3. the parallel design makes it easy to expand. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the utility model.

[0022] Figure 2 is a structural schematic view of the utility model.

[0023] Figure 3 is a structural schematic view of the utility model.

[0024] Figure 4 is a structural schematic view of the utility model.

[0025] Figure 5 is the internal structure schematic diagram provided by the utility model.

[0026] Figure 6 is the water cooling plate front structure schematic diagram provided by the utility model.

[0027] Figure 7 is the water cooling plate back structure schematic diagram provided by the utility model.

[0028] Figure 8 is the cooling system structure schematic diagram provided by the utility model.

[0029] In the figure, cabinet 1, front panel 11, air inlet 111, back panel 12, first vent 121, second vent 122, lower bottom plate 13, bottom vent 131, left side panel 14, third vent 141, right side panel 15, maintenance door panel 151, suspended frame 16, back-shaped chassis 161, heightening rod 162, roller 17, capacitor module 2, capacitor body 21, control board card 3, power module 4, air cooling heat dissipation assembly 5, fan 51, water cooling heat dissipation assembly 6, water cooling plate 61, water inlet connector 62, water outlet connector 63, discharge resistor 7, external heat exchanger 8, water outlet pipe 81, water inlet pipe 82. DETAILED DESCRIPTION

[0030] As Figures 1-8 shown, the integrated water-cooled frequency converter includes cabinet 1 and handle arranged on cabinet 1, capacitor module 2 is arranged in cabinet 1 and located at the upper part, capacitor module 2 includes a plurality of capacitor bodies 21 arranged in a rectangular array, capacitor body 21 is connected with cabinet 1 through capacitor body support, and wind gap is arranged between any two adjacent capacitor bodies, in the embodiment, 16 capacitor bodies 21 are arranged, control board card 3 and power module 4 are arranged below capacitor module 2, air cooling heat dissipation assembly 5 is connected with cabinet 1 and used for heat dissipation of capacitor module 2, power module 4 is connected with water cooling heat dissipation assembly 6, and control board card 3 and power module 4 are existing devices, and the structure will not be described in detail.

[0031] In the embodiment, capacitor module 2 is installed in the upper part of cabinet 1, is cooled through air cooling heat dissipation assembly 5, power module 4 is arranged below, is cooled through water cooling heat dissipation assembly 6, according to the heat quantity of each functional module, the corresponding cooling mode is selected, the cooling effect is guaranteed, and the comprehensive cost can also be reduced.

[0032] More specifically, air cooling heat dissipation assembly 5 includes at least one fan 51, air inlet 111 is arranged on the front panel 11 of cabinet 1, fan 51 is arranged on air inlet 12, a plurality of first vents 121 are arranged on the back panel 12 of cabinet 1, in the embodiment, 2 fans 51 distributed in the upper and lower parts are installed on air inlet 111.

[0033] More specifically, the bottom of the cabinet 1 is provided with a cantilever frame 16, the bottom of the cantilever frame 16 is provided with four rollers 17, the rollers 17 are provided with brakes, the cantilever frame 16 includes a back-shaped bottom frame 161, the four corners of the back-shaped bottom frame 161 are connected with the cabinet 1 through four heightening rods 162 respectively.

[0034] As shown in Figure 2 and 5 , the control board card 3 is arranged on one side of the power module 4, a lower bottom plate 13 connected with the cabinet 1 is arranged below the control board card 3 and the power module 4, and a plurality of bottom ventilation holes 131 are arranged on the lower bottom plate 13.

[0035] As shown in Figure 4 , a plurality of second ventilation holes 122 for heat dissipation of the control board card 3 are arranged below the plurality of first ventilation holes 121 on the back panel 12 of the cabinet 1; and a plurality of third ventilation holes 141 for heat dissipation of the control board card 3 are arranged on the lower portion of the left side panel 14 of the cabinet 1.

[0036] As shown in Figure 3 , the power module 4 of the cabinet 1 is arranged on one side of the cabinet 1 close to the right side panel 15, a maintenance door plate 151 is arranged on the right side panel 15, and the maintenance door plate 151 is detachably connected with the right side panel 15.

[0037] As shown in Figures 6 to 8 , the water-cooled heat dissipation assembly 6 includes a water-cooled plate 61, the water-cooled plate 61 is connected with the cabinet 1 through a water-cooled plate support, the water-cooled plate 61 is provided with a water inlet joint 62 and a water outlet joint 63, the water inlet joint 62 and the water outlet joint 63 are connected with a water circulation channel in the water-cooled plate 61, the power module 4 is fixed on one side of the water-cooled plate 61, the water-cooled plate 61 is fixed in the cabinet 1, and the water inlet joint 62 and the water outlet joint 63 extend out to the outside through the front panel 11 of the cabinet 1. At least one (two in this embodiment) discharge resistor 7 is fixed on the other side of the water-cooled plate 61.

[0038] More specifically, heat-conducting materials are arranged between the power module 4 and the water-cooled plate 61, and heat-conducting materials are arranged between the discharge resistor 7 and the water-cooled plate 61.

[0039] As shown in Figure 8 , the cooling system of the integrated water-cooled frequency converter includes an external heat exchanger 8, a plurality of integrated water-cooled frequency converters are connected in parallel on the water outlet pipe 81 and the water inlet pipe 82 of the external heat exchanger 8, and the water outlet joint 63 and the water inlet joint 62 of the water-cooled heat dissipation assembly 6 are connected to the water outlet pipe 81 and the water inlet pipe 82 respectively.

[0040] As a preferred, the water outlet joint 63 and the water inlet joint 62 are connected with the water outlet pipe 81 and the water inlet pipe 82 through threaded structures respectively.

[0041] As preferred, the water outlet joint 63 and the water inlet joint 62 are connected with the water outlet pipe 81 and the water inlet pipe 82 respectively through buckle structures.

[0042] The working principle of the embodiment is that the capacitor module 2 above the cabinet body 1 draws air in through the fan 51 arranged at the air inlet 12, blows the air through the capacitor body 21 to take away heat, and then blows the air out from the first air vent 121, part of the air sinks to blow through the control board card 3 to take away heat, and then blows out from the second air vent and the bottom air vent 131, the cooling water enters the water cooling plate 61 to absorb heat, and then flows out through the water outlet joint 63 to take away heat for heat dissipation.

[0043] When power expansion is needed, multiple integrated water-cooled frequency converters can be moved to a parallel position through the rollers 17 arranged at the bottom of the overhanging frame 16, and multiple groups of water outlet pipes 81 and water inlet pipes 82 of the external heat exchanger 8 are connected to the water outlet joint 63 and the water inlet joint 62 of each integrated water-cooled frequency converter respectively, so that the cooling water is delivered to the external heat exchanger 8, thereby realizing parallel connection of multiple integrated water-cooled frequency converters.

[0044] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

[0045] Although the terms such as cabinet body, front panel, air inlet, back panel, first air vent, second air vent, lower bottom plate, bottom air vent, left side panel, third air vent, right side panel, maintenance door panel, overhanging frame, back-shaped chassis, heightening rod, roller, capacitor module, capacitor body, control board card, power module, air-cooled heat dissipation assembly, fan, water-cooled heat dissipation assembly, water cooling plate, water inlet joint, water outlet joint, discharge resistor, external heat exchanger, water outlet pipe, water inlet pipe, etc. are used more frequently herein, but the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application, and any additional limitation is contrary to the spirit of the present application.

Claims

1. An integrated water-cooled frequency converter comprising a cabinet (1), characterized in that, The cabinet body (1) is provided with a capacitor module (2) at the top, a control board card (3) and a power module (4) below the capacitor module (2), the cabinet body (1) is provided with a wind cooling heat dissipation assembly (5) connected for heat dissipation of the capacitor module (2), the power module (4) is connected with a water cooling heat dissipation assembly (6), the control board card (3) is arranged on one side of the power module (4), and the lower bottom plate (13) connected with the cabinet body (1) is arranged below the control board card (3) and the power module (4), and a plurality of bottom ventilation holes (131) are arranged on the lower bottom plate (13).

2. The integrated water-cooled frequency converter of claim 1, wherein, The wind cooling heat dissipation assembly (5) comprises at least one fan (51), the front panel (11) of the cabinet body (1) is provided with an air inlet (111), and the fan (51) is arranged on the air inlet (111); and a plurality of first ventilation holes (121) are arranged on the back panel (12) of the cabinet body (1).

3. The integrated water-cooled frequency converter of claim 1, wherein, The back panel (12) of the cabinet body (1) is further provided with a plurality of second ventilation holes (122) below the plurality of first ventilation holes (121) for heat dissipation of the control board card (3); and a plurality of third ventilation holes (141) for heat dissipation of the control board card (3) are arranged on the lower side of the left side panel (14) of the cabinet body (1).

4. The integrated water-cooled frequency converter of claim 1, wherein, The power module (4) of the cabinet body (1) is arranged on one side of the cabinet body (1) close to the right side panel (15), a maintenance door plate (151) is arranged on the right side panel (15), and the maintenance door plate (151) is detachably connected with the right side panel (15).

5. The integrated water-cooled frequency converter of any of claims 1-4, wherein, The water cooling heat dissipation assembly (6) comprises a water cooling plate (61), the water cooling plate (61) is provided with a water inlet connector (62) and a water outlet connector (63), the water inlet connector (62) and the water outlet connector (63) are connected with a water circulation channel in the water cooling plate (61), the power module (4) is fixed on one side of the water cooling plate (61), and the water cooling plate (61) is fixed in the cabinet body (1), and the water inlet connector (62) and the water outlet connector (63) penetrate the front panel (11) of the cabinet body (1) and extend to the outside.

6. The integrated water-cooled frequency converter of claim 5, wherein, At least one discharge resistor (7) is fixed on the other side of the water cooling plate (61).

7. The integrated water-cooled frequency converter of claim 6, wherein, Thermal conductive materials are arranged between the power module (4) and the water cooling plate (61), and thermal conductive materials are arranged between the discharge resistor (7) and the water cooling plate (61).

8. The integrated water-cooled frequency converter of any of claims 1-5, wherein, The cabinet body (1) is provided with a suspension frame (16) at the bottom, and the suspension frame (16) is provided with four rollers (17) at the bottom.

9. A cooling system for an integrated water-cooled frequency converter, characterized by The external heat exchanger (8) is provided with a plurality of integrated water cooling frequency converters as claimed in any one of claims 1-8 in parallel connection on the water outlet pipe (81) and the water inlet pipe (82), and the water outlet connector (63) and the water inlet connector (62) of the water cooling heat dissipation assembly (6) are connected to the water outlet pipe (81) and the water inlet pipe (82) respectively.

Images